see http://www.mail-archive.com/user@cassandra.apache.org/msg03583.html
On Tue, Sep 7, 2010 at 12:38 PM, Dathan Pattishall <datha...@gmail.com> wrote: > For this java process > > /opt/java/bin/java -ea -Xms1G -Xmx7G -XX:+UseParNewGC > -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:SurvivorRatio=8 > -XX:MaxTenuringThreshold=1 -XX:+HeapDumpOnOutOfMemoryError > -Dcom.sun.management.jmxremote.port=8181 > -Dcom.sun.management.jmxremote.ssl=false > -Dcom.sun.management.jmxremote.authenticate=false > -Dstorage-config=/opt/cassandra/bin/../conf -cp > /opt/cassandra/bin/../conf:/opt/cassandra/bin/../build/classes:/opt/cassandra/bin/../lib/antlr-3.1.3.jar:/opt/cassandra/bin/../lib/apache-cassandra-0.6.4.jar:/opt/cassandra/bin/../lib/clhm-production.jar:/opt/cassandra/bin/../lib/commons-cli-1.1.jar:/opt/cassandra/bin/../lib/commons-codec-1.2.jar:/opt/cassandra/bin/../lib/commons-collections-3.2.1.jar:/opt/cassandra/bin/../lib/commons-lang-2.4.jar:/opt/cassandra/bin/../lib/google-collections-1.0.jar:/opt/cassandra/bin/../lib/hadoop-core-0.20.1.jar:/opt/cassandra/bin/../lib/high-scale-lib.jar:/opt/cassandra/bin/../lib/ivy-2.1.0.jar:/opt/cassandra/bin/../lib/jackson-core-asl-1.4.0.jar:/opt/cassandra/bin/../lib/jackson-mapper-asl-1.4.0.jar:/opt/cassandra/bin/../lib/jline-0.9.94.jar:/opt/cassandra/bin/../lib/json-simple-1.1.jar:/opt/cassandra/bin/../lib/libthrift-r917130.jar:/opt/cassandra/bin/../lib/log4j-1.2.14.jar:/opt/cassandra/bin/../lib/slf4j-api-1.5.8.jar:/opt/cassandra/bin/../lib/slf4j-log4j12-1.5.8.jar > org.apache.cassandra.thrift.CassandraDaemon > > I set the max memory size to 7G yet Cassandra is taking > > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > > > > 6992 root 18 0 32.8g 29g 21g S 19 93.9 5685:14 > /opt/java/bin/java -ea -Xms1G -Xmx7G -XX:+UseParNewGC > -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:SurvivorRatio=8 > -XX:M > > why is that, and how do I cap the memory used for cassandra? Is this a bug > or a mistake on my part? > > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
